One point five million buyers who lost their homes and credit during the housing crash could re-enter the market. CNBC's Diana Olick reports on the impact these boomerang buyers will have on the housing market.

Low interest rates have been driving the fragile market, says Robert Shiller, Case-Shiller Index co-founder and Yale University professor of economics, discusses continued sluggishness in home prices and if home sales will accelerate in 2015.